Functions of Neurotransmitters

Functions of Neurotransmitters

 

Neurotransmitters Functions Disorders from insufficiency Disorders from oversupply
Acetylcholine Memory; muscle movement (contraction) Alzheimer’s disease, dementia Convulsions/spider bite/nerve gas
Dopamine Cognition; sensory; movement Parkinson’s disease, sensory deficits, tremors Delusions, hallucinations, methamphetamine addiction
Endorphins Suppress pain; improve good feelings Pain; stress Euphoria; dependence (opiate addiction)
GABA Reduces brain activity levels; visual processing Visual deficits (fetal alcohol syndrome); anxiety Sedation (alcohol/sedative addiction)
Glutamate Primary excitatory neurotransmitter Manic episodes Depression
Norepinephrine Learning; memory; “fight or flight” response Depression Anxiety
Serotonin Mood; sleep regulation Aggression; depression Mood disorders (manic episodes)
Substance P Transmits pain information Insufficient sensitivity to tissue damage Stress; pain
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